Pyongyang leader Kim Jong-un is said to have offered reinforcements in exchange for energy and grain from Moscow.
Russian news agency Regnum claimed the pariah Communist state would also provide builders to help repair war damage.
Vladimir Putin would be expected to deploy the extra personnel to his allies in the eastern separatist republics of Donetsk and Luhansk.
Igor Korotchenko, a reserve colonel and TV defence analyst, said Moscow should gratefully accept the offer of help.
He claimed Kim’s fighters have artillery systems and vast experience with rocket systems and counter battery warfare.
“We shouldn’t be shy in accepting the hand extended to us by Kim Jong-un,” he said.
“If North Korea wants to participate in the conflict, well, let’s give the green light to their volunteer impulse.
“If North Korea expresses a desire to meet its international duty to fight against Ukrainian fascism, we should let them.”
The news came as Russia was accused of employing “terror tactics” by launching rocket attacks on civilians near Europe’s largest nuclear plant.
Locals living near the Zaporizhzhia site in East Ukraine claim homes have been pounded.
Earlier this week, Rafael Grossi, head of the UN’s nuclear agency, said the badly-hit site was “completely out of control”.